Articles | Volume 18, issue 8
Nat. Hazards Earth Syst. Sci., 18, 2111–2125, 2018
https://doi.org/10.5194/nhess-18-2111-2018
Nat. Hazards Earth Syst. Sci., 18, 2111–2125, 2018
https://doi.org/10.5194/nhess-18-2111-2018
Research article
08 Aug 2018
Research article | 08 Aug 2018

Development of fragility curves for road bridges exposed to volcanic lahars

Joaquín Dagá et al.

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Latest update: 22 May 2022
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Short summary
One of the main volcanic processes affecting road bridges are lahars, which are flows of water and volcanic material running down the slopes of a volcano. In this paper, bridge failure models due to lahars are proposed and, based on these, fragility curves are developed. Fragility curves are parameterized by maximum likelihood estimation, assuming a cumulative log-normal distribution. Bridge failure models are empirically evaluated using data of 15 bridges that were affected by lahars.
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